Cut-off for cisterns



(No Model.)

1). S. TROY. GUT-OFF FOR GISTBRNS.

Patented Dec. 2 1884.

7O ngvsuiroa ATTORNEYS WITNESSES N, PETERS. P umo-Lilhngnphnr. ww-m mn.0.0.

l the pipe F into the cistern.

UNI ED STATES PATENT @FFICE.

DANIEL S. TROY, OF MONTGOMERY, ALABAMA.

CUT-OFF FOR CISUTERNS.

EPECIPICATION forming part of Letters Patent No. 308,861, dated December2, 1884.

Application filed May 8, 1884. (N0 model.)

To all whom it may concern:

Be it known that I, DANIEL S. TROY, of Montgomery, in the county ofMontgomery and State of Alabama, have invented a new and ImprovedCut-Off for Oisterns, of which the following is a full, clear, and exactdescription. I l

The object of my invention is to provide a new and improved device forautomatically preventing the rain-water from passing into the cisternuntil after the roof has been washed off.

The invention consists in the combination, with a barrel or tank havingan apertured horizontal partition a short distance below the top, of afloat held below the partition, and of an overflow-pipe connecting theupper part of the tank or barrel with the cistern.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 is a longitudinal sectional elevation of myimproved cut-off forcisterns. Fig. 2 is a sectional plan view of the same on the line 00 as,Fig. l.

A tank, A, such as a barrel or other suit able receptacle, is providedabout six inches from its top with a transverse partition, 13, providedwith an aperture, 0; The waterinlet pipe D, or leader from the roof, isheld in the head A of the barrel or top of the tank. A float, E, adaptedto close the aperture O, is held in the barrel in the part be low thepartition 13. An overflow-pipe, F,

leads from that part of the barrel or tank above the partition B to thecistern G. The barrel or tank A is provided at its bottom with an outlctcock, H. The water flows from the pipe D into the barrel or tank andcollects in the bottom of the same, and as the level of the water risesthe float E rises and then closes the aperture (3 by being pressed bythe water against the under side of the partition B. The water thenflows through The water that is first collected on the root, and whichhas washed off the roof and contains the impurities, 850., that were onthe roof, is collected in the tank or barrel, and only the clean andpure water can pass into the cistern. When it stops raining, the waterin the barrel or tank is drawn off through the-cock H.

My improved cut-off prevents any impurities being washed from the roofinto the cistern. The impurities floating in the lower atmosphere andbrought down by the rain when it begins to fall, as well as theimpurities collected on the roof, are carried into the barrel orreceptacle. The quantity of water required to collect these impuritiesvaries in different localities; but by using one or more barrels orreceptacles connected by a pipe to the one containing the cut-off thestorage room for the impure water may be indefinitely increased, so thatonly pure rain-water will flow into the cistern. always impure, becausethe snow mixes with the impurities which are. on the roof when the snowfalls, and also absorbs impurities from the atmosphere while it remainson the roof, and these impurities are in the water formed by the meltingsnow; consequently, when snow is melting the cock H should be left open,so that none of the water can enter the cistern; but by use, of thecut-01f abso- Snow-water is I lutely-pure rainwater can be secured atall seasons when there is not snow on the roof. The inlet-pipe D, orleader from the roof,

should enter the head of the barrel or top of so the tank near one side,so that the impact of the falling water may not disturb the float E whenthe barrel or tank is full.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. A cut-off for cisterns made substantially as herein shown anddescribed, and consist ing of a tank or vessel connected by anoverflow-pipe with the cistern,and provided with a valve whichautomatically closes an opening in the tank or vessel,to prevent thewater that has collected in the tank from mixing with the waterthat isto pass into the cistern, as set forth.

2. In a cut-oft for cisterns, the combination, with the barrel or tankA, of the horizontal partition 13, having an aperture, 0, theoverflow-pipe F, leading from the part above the partition to thecistern, the float E, and the cock H, substantially as herein shown anddescribed.

DANIEL S. TROY.

Witnesses:

H. C. TOMPKINS, ALEX. TROY.

